Sheet-conveying machine.



B. LEVI.

SHEET CONVEYING MACHNE.

APPLICATION FILED MAY 7, 1912.

Patented Feb. 4, 1913.

5mes

UNITED STATES PATENT OFFICE.'

BENJAMIN Lnvr, or Naw YORK, N. Y.

SHEET-CONVEY ING IA CHINE.

.. .specianon of :Letters Patent.' Application Med Hay 7, 1912. SerialNo. 695,883.. v

.Patented nel. 4,1913.

"To all whom'z't may concern Be lit known that I, BnNaAMiN LnvI, acitizen of the United States, and a residentof New York, county andState of New vsYork, have invented new and useful Improvements inSheet-Conveying Machines,

'o of which the following is a Specification.

yjlO

The improvements in belt conveyers for sheet material relateparticularly to a continuously moving bed or feeding surface composed ofseparate or independent sections and the arrangement of the beltsconstituting the sections,.whereby the sheetmaterial being carried, inwhatever conditionl it Ymay be, will be properly transferred from .lvone section of the conveyer'to another w1th out distortion or injury. vIn'the application of this invention to machines designed to'xsensitized sheet material or was and dry' the same by vpassing itthrough appropriate tanks and chambers each section of ythe beltconveyer, as it is fitted to act in only one of 'the parts of themachine, will be submitted to only that part of the process incident tothe tank or cham-y f vberin which it is located.

' j Conveyers embodying this invention have la continuouslylongitudinally moving hedor Vsurface and are practicallylaterallycontining belts of the two sections pass and the intermediate belts ofeach section pass over of the conveyer.

one of the outer rollers, whereby any material carried by a section willbefore its leading edge leaves said section be on vand controlld by thebelts of the next section This with other features of construction willbe more fully described by reference had to the'accompanying drawin inwhich igure l illustrates an application of the invention to a twosection or two part conveyer, showing one section arranged to carrysheet material, as paper, through a washing tank and the other onearranged to then convey .the sheet material through a drying chamber;Fig. 2 is a front view of the portion of the conveyor showing therollers which cont-rol the adjacent ends ofthe two sections, omittingthe devices in front of the rollers and the conveyerbelts, 'and Fig. 3is a transverse section on the lineB, 3,' Fig. l, showing a guide 'anddraining devicfor the belts 'of the washing section.

Referring to Fig; 2 for a clear underystanding of the principal featureof the invvention a, b vand c represent three 'rollers l constitutingthe controlling and transmitf'ting means at the adjacent lends of twosections o'f the conveyer, fitted parallel torotate in suitable bearingsin the frame for case 'of the lapparat-us. Over the` central roller 'bpass the alternate belts. d ofl the washing section of the conveyer,while the interposed belts e pass over the roller c.

The alternate belts fof the drying section also pass over the roller bbetween the end of the belts d, and the interposed belts g of thissection passover the roller a. It will be seen that-this staggering'ofthe belts of the two sections `provide for a practically .i

continuous moving surface consisting of longitudinal sections, so vthatsheet material will in passing from one of the sections to lthe other beunder control of both sections of belts. The belts i and e pass from therollers b and c to the guide roller h located in the tank z', and fromthis roller to the feeding roller j yat the upper part of the.

tank, and hence'under the guide roller lo, also yin the tank, back tothe'rollers b and c. The belts f and g of the upper section pass intothe drying chamber Z and are therein guided over a roller m at the upperpart, a roller n at thelower part and a roller 0 at the central part ofthe chamber, and from roller o they return to the rollers a and"- b.

lThis chamber may be heated by lmeans of a gas stove 71 in .its loweryend or by suitably arranged steam pipes, asindicated by the dottedcircles g.

jTo hold the paper or other sheet material against the belts d and e ofthe washing section cords r are provided which pass over a roller s,forming in conjunction with the roller j the feeding end of the system,under the roller c, over the roller t and back to the roller s.The-roller t is in frontof the staggered portions of the belts of thetwo sections, and around it also pass cords u, which press and hold thesheet material against the drying section of the conveyer.

They pass from roller t over the ro ler wt and down around a roller. fv,hen e over guide rollers fw and back to the roller t. The rollers n and'v with the belts and cords traveling with them constitute the dischargeend ofthe system, Rollers y and z are arranged to flex the ascending anddescending parts of the belts 'f and g and `cords ul to insure theproper gripping of the sheet material between them. j

Located in the path of the belts d and e as they leave the tank i is aguide stripper 1- having grooves 2, whose depth determined by the roller3 in front of the belts, allows the belts to pass freely through them,the belts being submitted to suilicient pressure to drain or scrape asmuch as possible thel washing fluid from the belts. The narrow tongues 4between the grooves act as lguides for the belts. n

.Any of the large belts carrying rollers maybe connected to any suitablesource of power, as for instance the central roller b,- but thepreferred arrangement is to proprising sets of belts arranged end .toend,

each set consisting of a plurality of narrow belts, thrceparallelrollersat the adjacentl ends of two sets of belts over the central oneof which the alternating belts of twol adjoining sets of' belts pass,and the inter mediate belts of each of the sets passing over one of theouter rollers, thus, longitudi-v v nally and laterally, constituting apractically continuous. conveying surface.

2. A conveyer for sheet materiah'comprising sets of belts arranged endto end, each set consisting of a plurality of narrow belts, threeparallel rollers at the adjacent ends of twosets of belts over thecentral one of which the alternating belts ofl two adjoining sets ofbelts pass, and the intermediate belts of each of the sets passing overone of the outer rollers, thus, longitudinally and laterally,constituting apractically connarrow belts, three parallel rollers at theady jacent ends of the-twosets of belts over the central onefofwhich'fthe alternating belts of the two sets of belts pass, with theintermediate belts of each set passing over one of the outer rollers,and aA guide roller con-A l 65 trolling theother ends l'of thev belts ofeach Y* ,15net. f v i vide the shafts of the rollers a, b and c withjf4. A1 siectional, lconveyer for sheet material,

comprising set-sf of narrow belts arranged end to end with the'beltsofthe adjacent sets overlapping, three parallel rollers the central oneof which carries some ofthe belts.,

of the two sets, and the outer rollers carryf.

intermediate belts of the two sets of beltsf" y whereby a continuity ofthe feeding surfacev between sections of the Vcouveyer 41s fmaingtained.

In testimony whereof, I

subscribed my name this 3rd dayf jMygf Witnesses:

ARTHUR E. BLA'rz, ERNEST D. ONDIT.l

y BENJAMIN Liivr. i

